Add private pepper API to keep the throbber spinning while PDFs are loading.

BUG=58795
Review URL: http://codereview.chromium.org/3685003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@62217 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 31 insertions, 1 deletions

diff --git a/webkit/glue/plugins/pepper_plugin_delegate.h b/webkit/glue/plugins/pepper_plugin_delegate.h
index 9483d9484..29fdfc8 100644
--- a/webkit/glue/plugins/pepper_plugin_delegate.h
+++ b/webkit/glue/plugins/pepper_plugin_delegate.h
@@ -211,6 +211,10 @@ class PluginDelegate {
   // Retrieves the proxy information for the given URL in PAC format. On error,
   // this will return an empty string.
   virtual std::string ResolveProxy(const GURL& url) = 0;
+
+  // Tell the browser when resource loading starts/ends.
+  virtual void DidStartLoading() = 0;
+  virtual void DidStopLoading() = 0;
 };
 
 }  // namespace pepper
diff --git a/webkit/glue/plugins/pepper_private.cc b/webkit/glue/plugins/pepper_private.cc
index f12e045..e236b67f 100644
--- a/webkit/glue/plugins/pepper_private.cc
+++ b/webkit/glue/plugins/pepper_private.cc
@@ -11,10 +11,13 @@
 #include "grit/webkit_resources.h"
 #include "grit/webkit_strings.h"
 #include "skia/ext/platform_canvas.h"
+#include "third_party/ppapi/c/pp_resource.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "third_party/icu/public/i18n/unicode/usearch.h"
 #include "webkit/glue/webkit_glue.h"
 #include "webkit/glue/plugins/pepper_image_data.h"
+#include "webkit/glue/plugins/pepper_plugin_delegate.h"
+#include "webkit/glue/plugins/pepper_plugin_instance.h"
 #include "webkit/glue/plugins/pepper_plugin_module.h"
 #include "webkit/glue/plugins/pepper_var.h"
 #include "webkit/glue/plugins/ppb_private.h"
@@ -224,12 +227,28 @@ void SearchString(PP_Module module,
   usearch_close(searcher);
 }
 
+void DidStartLoading(PP_Instance instance_id) {
+  PluginInstance* instance = ResourceTracker::Get()->GetInstance(instance_id);
+  if (!instance)
+    return;
+  instance->delegate()->DidStartLoading();
+}
+
+void DidStopLoading(PP_Instance instance_id) {
+  PluginInstance* instance = ResourceTracker::Get()->GetInstance(instance_id);
+  if (!instance)
+    return;
+  instance->delegate()->DidStopLoading();
+}
+
 const PPB_Private ppb_private = {
   &GetLocalizedString,
   &GetResourceImage,
   &GetFontFileWithFallback,
   &GetFontTableForPrivateFontFile,
-  &SearchString
+  &SearchString,
+  &DidStartLoading,
+  &DidStopLoading
 };
 
 }  // namespace
diff --git a/webkit/glue/plugins/ppb_private.h b/webkit/glue/plugins/ppb_private.h
index 6a30dcf..378ecad 100644
--- a/webkit/glue/plugins/ppb_private.h
+++ b/webkit/glue/plugins/ppb_private.h
@@ -6,6 +6,7 @@
 #define WEBKIT_GLUE_PLUGINS_PPB_PRIVATE_H_
 
 #include "third_party/ppapi/c/dev/ppb_font_dev.h"
+#include "third_party/ppapi/c/pp_instance.h"
 #include "third_party/ppapi/c/pp_module.h"
 #include "third_party/ppapi/c/pp_var.h"
 
@@ -110,6 +111,12 @@ struct PPB_Private {
      bool case_sensitive,
      PP_PrivateFindResult** results,
      int* count);
+
+  // Since WebFrame doesn't know about Pepper requests, it'll think the page has
+  // finished loading even if there are outstanding requests by the plugin.
+  // Take this out once WebFrame knows about requests by pepper plugins.
+  void (*DidStartLoading)(PP_Instance instance);
+  void (*DidStopLoading)(PP_Instance instance);
 };
 
 #endif  // WEBKIT_GLUE_PLUGINS_PPB_PRIVATE_H_