Compute pageScaleFactor on page so that fixed layout page fits width of window.

content/renderer/render_widget.cc

 // Copyright (c) 2011 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 "content/renderer/render_widget.h"
 
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 69 matching lines @@
       has_focus_(false),
       handling_input_event_(false),
       closing_(false),
       is_swapped_out_(false),
       input_method_is_active_(false),
       text_input_type_(ui::TEXT_INPUT_TYPE_NONE),
       can_compose_inline_(true),
       popup_type_(popup_type),
       pending_window_rect_count_(0),
       suppress_next_char_events_(false),
+      page_scale_factor_set_(false),
       is_accelerated_compositing_active_(false),
       animation_update_pending_(false),
       animation_task_posted_(false),
       invalidation_task_posted_(false) {
   RenderProcess::current()->AddRefProcess();
   DCHECK(render_thread_);
   has_disable_gpu_vsync_switch_ = CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kDisableGpuVsync);
 }
 
@@ skipping 1136 matching lines @@
 
 webkit::ppapi::PluginInstance* RenderWidget::GetBitmapForOptimizedPluginPaint(
     const gfx::Rect& paint_bounds,
     TransportDIB** dib,
     gfx::Rect* location,
     gfx::Rect* clip) {
   // Bare RenderWidgets don't support optimized plugin painting.
   return NULL;
 }
 
+gfx::Size RenderWidget::GetContentSize() {
+  // Bare RenderWidgets don't support content size.
+  return gfx::Size(0, 0);
+}
+
+float RenderWidget::GetPageScaleFactor() {
+  // Bare RenderWidgets don't support page scale factor.
+  return 1.0f;
+}
+
 gfx::Point RenderWidget::GetScrollOffset() {
   // Bare RenderWidgets don't support scroll offset.
   return gfx::Point(0, 0);
 }
 
 void RenderWidget::SetHidden(bool hidden) {
   if (is_hidden_ == hidden)
     return;
 
   // The status has changed.  Tell the RenderThread about it.
@@ skipping 135 matching lines @@
 
 void RenderWidget::CleanupWindowInPluginMoves(gfx::PluginWindowHandle window) {
   for (WebPluginGeometryVector::iterator i = plugin_window_moves_.begin();
        i != plugin_window_moves_.end(); ++i) {
     if (i->window == window) {
       plugin_window_moves_.erase(i);
       break;
     }
   }
 }