Make new-style page scale work on Android.

content/browser/android/content_view_core_impl.cc

Index: content/browser/android/content_view_core_impl.cc
diff --git a/content/browser/android/content_view_core_impl.cc b/content/browser/android/content_view_core_impl.cc
index be9a22738360afea0fc3775b0faf87d04267e992..aa82e4ecfec7a8b8a66074bb569621b68016382b 100644
--- a/content/browser/android/content_view_core_impl.cc
+++ b/content/browser/android/content_view_core_impl.cc
@@ -8,6 +8,7 @@
 #include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "base/android/scoped_java_ref.h"
+#include "base/command_line.h"
 #include "base/json/json_writer.h"
 #include "base/logging.h"
 #include "base/utf_string_conversions.h"
@@ -36,6 +37,7 @@
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/content_client.h"
+#include "content/public/common/content_switches.h"
 #include "content/public/common/page_transition_types.h"
 #include "jni/ContentViewCore_jni.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebBindings.h"
@@ -44,6 +46,8 @@
 #include "ui/gfx/android/java_bitmap.h"
 #include "ui/gfx/android/window_android.h"
 #include "ui/gfx/screen.h"
+#include "ui/gfx/size_conversions.h"
+#include "ui/gfx/size_f.h"
 #include "webkit/glue/webmenuitem.h"
 #include "webkit/user_agent/user_agent_util.h"
 
@@ -167,7 +171,8 @@ ContentViewCoreImpl::ContentViewCoreImpl(JNIEnv* env, jobject obj,
 
   InitJNI(env, obj);
 
-  if (!gfx::Screen::GetNativeScreen()->IsDIPEnabled()) {
+  if (CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kEnableCssTransformPinch)) {
     dpi_scale_ = 1;
   } else {
     scoped_ptr<content::DeviceInfo> device_info(new content::DeviceInfo());
@@ -607,15 +612,19 @@ void ContentViewCoreImpl::ShowDisambiguationPopup(
                                                java_bitmap.obj());
 }
 
-gfx::Rect ContentViewCoreImpl::GetBounds() const {
+gfx::Size ContentViewCoreImpl::GetPhysicalSize() const {
   JNIEnv* env = AttachCurrentThread();
   ScopedJavaLocalRef<jobject> j_obj = java_ref_.get(env);
   if (j_obj.is_null())
-    return gfx::Rect();
-  return gfx::Rect(Java_ContentViewCore_getWidth(env, j_obj.obj()),
+    return gfx::Size();
+  return gfx::Size(Java_ContentViewCore_getWidth(env, j_obj.obj()),
                    Java_ContentViewCore_getHeight(env, j_obj.obj()));
 }
 
+gfx::Size ContentViewCoreImpl::GetDIPSize() const {
+  return gfx::ToCeiledSize(gfx::ScaleSize(GetPhysicalSize(), 1 / DpiScale()));
+}
+
 void ContentViewCoreImpl::AttachLayer(scoped_refptr<cc::Layer> layer) {
   root_layer_->addChild(layer);
 }