Enable chromium_code standard for XFA code

Clean up the left code which causes warnings. Enable using chromium_code
for XFA compilation, also re-enable all the msvs warning flags except
4267 (same as the main pdfium code).

BUG=pdfium:29,pdfium:475

Review-Url: https://codereview.chromium.org/2009813004

3 files changed, 31 insertions, 17 deletions

diff --git a/xfa.gyp b/xfa.gyp
index a4a6247694..ead79d3c15 100644
--- a/xfa.gyp
+++ b/xfa.gyp
@@ -1,5 +1,6 @@
 {
   "variables": {
+    "chromium_code": 1,
     "pdf_enable_v8%": 1,
   },
   "target_defaults": {
@@ -7,9 +8,7 @@
       "PDF_ENABLE_XFA",
     ],
     'msvs_disabled_warnings': [
-      4005, 4018, 4146, 4333, 4345, 4267,
-      # TODO(thestig): Fix all instances, remove this, pdfium:29
-      4245, 4310, 4389, 4701, 4702, 4706, 4800,
+      4267,
     ],
   },
   "targets":[
@@ -699,6 +698,9 @@
       "conditions": [
         ["clang==1" , {
         }],
+        ["os_posix==1 and clang==0", { # When GCC
+          'cflags': [ '-Wno-error=strict-overflow' ],
+        }],
         ["pdf_enable_v8==1", {
           'dependencies': [
             '<(DEPTH)/v8/src/v8.gyp:v8',
diff --git a/xfa/fwl/core/cfwl_widgetmgr.cpp b/xfa/fwl/core/cfwl_widgetmgr.cpp
index 760be7107b..90d621477a 100644
--- a/xfa/fwl/core/cfwl_widgetmgr.cpp
+++ b/xfa/fwl/core/cfwl_widgetmgr.cpp
@@ -816,8 +816,8 @@ FX_BOOL CFWL_WidgetMgrDelegate::IsNeedRepaint(IFWL_Widget* pWidget,
       if (r.Contains(hitPoint[i].hitPoint))
         hitPoint[i].bNotNeedRepaint = true;
     }
-  } while (
-      (pChild = CFWL_WidgetMgr::GetInstance()->GetNextSiblingWidget(pChild)));
+    pChild = CFWL_WidgetMgr::GetInstance()->GetNextSiblingWidget(pChild);
+  } while (pChild);
 
   if (!bChildIntersectWithDirty)
     return TRUE;
diff --git a/xfa/fxfa/parser/xfa_object_imp.cpp b/xfa/fxfa/parser/xfa_object_imp.cpp
index 6ee95eb8aa..3864c1a32c 100644
--- a/xfa/fxfa/parser/xfa_object_imp.cpp
+++ b/xfa/fxfa/parser/xfa_object_imp.cpp
@@ -829,8 +829,11 @@ void CXFA_Node::Script_NodeClass_ApplyXSL(CFXJSE_Arguments* pArguments) {
   }
   CFX_WideString wsExpression =
       CFX_WideString::FromUTF8(pArguments->GetUTF8String(0).AsStringC());
-  // TODO(tsepez): actually do something here?
+  // TODO(weili): check whether we need to implement this, pdfium:501.
+  // For now, just put the variables here to avoid unused variable warning.
+  (void)wsExpression;
 }
+
 void CXFA_Node::Script_NodeClass_AssignNode(CFXJSE_Arguments* pArguments) {
   int32_t iLength = pArguments->GetLength();
   if (iLength < 1 || iLength > 3) {
@@ -841,17 +844,22 @@ void CXFA_Node::Script_NodeClass_AssignNode(CFXJSE_Arguments* pArguments) {
   CFX_WideString wsValue;
   int32_t iAction = 0;
   if (iLength >= 1) {
-    CFX_ByteString bsExpression = pArguments->GetUTF8String(0);
-    wsExpression = CFX_WideString::FromUTF8(bsExpression.AsStringC());
+    wsExpression =
+        CFX_WideString::FromUTF8(pArguments->GetUTF8String(0).AsStringC());
   }
   if (iLength >= 2) {
-    CFX_ByteString bsValue = pArguments->GetUTF8String(1);
-    wsValue = CFX_WideString::FromUTF8(bsValue.AsStringC());
+    wsValue =
+        CFX_WideString::FromUTF8(pArguments->GetUTF8String(1).AsStringC());
   }
-  if (iLength >= 3) {
+  if (iLength >= 3)
     iAction = pArguments->GetInt32(2);
-  }
+  // TODO(weili): check whether we need to implement this, pdfium:501.
+  // For now, just put the variables here to avoid unused variable warning.
+  (void)wsExpression;
+  (void)wsValue;
+  (void)iAction;
 }
+
 void CXFA_Node::Script_NodeClass_Clone(CFXJSE_Arguments* pArguments) {
   int32_t iLength = pArguments->GetLength();
   if (iLength != 1) {
@@ -1139,22 +1147,26 @@ void CXFA_Node::Script_NodeClass_SetAttribute(CFXJSE_Arguments* pArguments) {
       CFX_WideString::FromUTF8(pArguments->GetUTF8String(1).AsStringC());
   SetAttribute(wsAttribute.AsStringC(), wsAttributeValue.AsStringC(), TRUE);
 }
+
 void CXFA_Node::Script_NodeClass_SetElement(CFXJSE_Arguments* pArguments) {
   int32_t iLength = pArguments->GetLength();
   if (iLength != 1 && iLength != 2) {
     ThrowScriptErrorMessage(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"setElement");
     return;
   }
-  CXFA_Node* pNode = NULL;
+  CXFA_Node* pNode = nullptr;
   CFX_WideString wsName;
-  if (iLength >= 1) {
+  if (iLength >= 1)
     pNode = static_cast<CXFA_Node*>(pArguments->GetObject(0));
-  }
   if (iLength >= 2) {
-    CFX_ByteString bsName = pArguments->GetUTF8String(1);
-    wsName = CFX_WideString::FromUTF8(bsName.AsStringC());
+    wsName = CFX_WideString::FromUTF8(pArguments->GetUTF8String(1).AsStringC());
   }
+  // TODO(weili): check whether we need to implement this, pdfium:501.
+  // For now, just put the variables here to avoid unused variable warning.
+  (void)pNode;
+  (void)wsName;
 }
+
 void CXFA_Node::Script_NodeClass_Ns(CFXJSE_Value* pValue,
                                     FX_BOOL bSetting,
                                     XFA_ATTRIBUTE eAttribute) {