[android] Resize the android_webview if it's 0x0 initially.

android_webview/renderer/aw_render_view_ext.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "android_webview/renderer/aw_render_view_ext.h"
 
 #include <string>
 
 #include "android_webview/common/aw_hit_test_data.h"
 #include "android_webview/common/render_view_messages.h"
@@ skipping 109 matching lines @@
     data->extra_data_for_type = data->img_src.possibly_invalid_spec();
   } else if (is_editable) {
     data->type = AwHitTestData::EDIT_TEXT_TYPE;
     DCHECK(data->extra_data_for_type.length() == 0);
   }
 }
 
 }  // namespace
 
 AwRenderViewExt::AwRenderViewExt(content::RenderView* render_view)
-    : content::RenderViewObserver(render_view) {
+    : content::RenderViewObserver(render_view), page_scale_factor_(0.0f) {
   render_view->GetWebView()->setPermissionClient(this);
 }
 
 AwRenderViewExt::~AwRenderViewExt() {
 }
 
 // static
 void AwRenderViewExt::RenderViewCreated(content::RenderView* render_view) {
   new AwRenderViewExt(render_view);  // |render_view| takes ownership.
 }
@@ skipping 44 matching lines @@
 void AwRenderViewExt::DidCommitProvisionalLoad(WebKit::WebFrame* frame,
                                                bool is_new_navigation) {
   content::DocumentState* document_state =
       content::DocumentState::FromDataSource(frame->dataSource());
   if (document_state->can_load_local_resources()) {
     WebKit::WebSecurityOrigin origin = frame->document().securityOrigin();
     origin.grantLoadLocalResources();
   }
 }
 
+void AwRenderViewExt::DidCommitCompositorFrame() {
+  UpdatePageScaleFactor();
+}
+
+void AwRenderViewExt::UpdatePageScaleFactor() {
+  if (page_scale_factor_ != render_view()->GetWebView()->pageScaleFactor()) {
+    page_scale_factor_ = render_view()->GetWebView()->pageScaleFactor();
+    Send(new AwViewHostMsg_PageScaleFactorChanged(routing_id(),
+                                                  page_scale_factor_));
+  }
+}
+
 void AwRenderViewExt::FocusedNodeChanged(const WebKit::WebNode& node) {
   if (node.isNull() || !node.isElementNode() || !render_view())
     return;
 
   // Note: element is not const due to innerText() is not const.
   WebKit::WebElement element = node.toConst<WebKit::WebElement>();
   AwHitTestData data;
 
   data.href = GetHref(element);
   data.anchor_text = element.innerText();
@@ skipping 52 matching lines @@
 }
 
 void AwRenderViewExt::OnSetInitialPageScale(double page_scale_factor) {
   if (!render_view() || !render_view()->GetWebView())
     return;
   render_view()->GetWebView()->setInitialPageScaleOverride(
       page_scale_factor);
 }
 
 }  // namespace android_webview