Add a tray notification UI for speech input recording in the extension API.

chrome/app/theme/theme_resources.grd

Index: chrome/app/theme/theme_resources.grd
diff --git a/chrome/app/theme/theme_resources.grd b/chrome/app/theme/theme_resources.grd
index d8f55d9551da9cf8cb5f071f3666e2f7ee2b16c8..6a542812d0f4a5faeca112a3a675740e3ba3e6bf 100644
--- a/chrome/app/theme/theme_resources.grd
+++ b/chrome/app/theme/theme_resources.grd
@@ -342,6 +342,19 @@
       <include name="IDR_SPEECH_INPUT_MIC_FULL" file="speech_input_mic_full.png" type="BINDATA" />
       <include name="IDR_SPEECH_INPUT_MIC_MASK" file="speech_input_mic_mask.png" type="BINDATA" />
       <include name="IDR_SPEECH_INPUT_SPINNER" file="speech_input_spinner.png" type="BINDATA" />
+      <include name="IDR_SPEECH_INPUT_TRAY_BALLOON_ICON" file="speech_input_tray_balloon_icon.png" type="BINDATA" />
+      <if expr="is_win">
+        <include name="IDR_SPEECH_INPUT_TRAY_MIC_EMPTY" file="speech_input_tray_windows_mic_empty.png" type="BINDATA" />
+        <include name="IDR_SPEECH_INPUT_TRAY_MIC_FULL" file="speech_input_tray_windows_mic_full.png" type="BINDATA" />
+      </if>
+      <if expr="is_linux or pp_ifdef('chromeos')">
+        <include name="IDR_SPEECH_INPUT_TRAY_MIC_EMPTY" file="speech_input_tray_linux_mic_empty.png" type="BINDATA" />
+        <include name="IDR_SPEECH_INPUT_TRAY_MIC_FULL" file="speech_input_tray_linux_mic_full.png" type="BINDATA" />
+      </if>
+      <if expr="is_macosx">
+        <include name="IDR_SPEECH_INPUT_TRAY_MIC_EMPTY" file="speech_input_tray_macosx_mic_empty.png" type="BINDATA" />
+        <include name="IDR_SPEECH_INPUT_TRAY_MIC_FULL" file="speech_input_tray_macosx_mic_full.png" type="BINDATA" />
+      </if>
       <if expr="pp_ifdef('_google_chrome') and is_macosx">
         <include name="IDR_STATUS_TRAY_ICON" file="google_chrome/product_logo_22_mono.png" type="BINDATA" />
         <include name="IDR_STATUS_TRAY_ICON_PRESSED" file="google_chrome/product_logo_22_mono_invert.png" type="BINDATA" />