API proposal for chrome.app.window to intercept all keys.

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index c769b611cc289a7ffe7441c59e0095c08a7f46f1..e8d996533ae40fdd7fcdd2954069036f4f2a755e 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -4570,6 +4570,16 @@ Make sure you do not expose any sensitive information.
       <message name="IDS_EXTENSION_PROMPT_WARNING_EXPERIENCE_SAMPLING_PRIVATE" desc="Permission string for Experience Sampling Private API.">
         Monitor when you take actions in Chrome
       </message>
+      <if expr="is_macosx">
+        <message name="IDS_EXTENSION_PROMPT_WARNING_INTERCEPT_ALL_KEYS" desc="Permission string for intercept all keyboard keys via packaged app extension APIs">
+        Read and change anything you type including task switching keys like CMD+TAB
+      </message>
+      </if>
+      <if expr="not is_macosx">
+      <message name="IDS_EXTENSION_PROMPT_WARNING_INTERCEPT_ALL_KEYS" desc="Permission string for intercept all keyboard keys via packaged app extension APIs">
+        Read and change anything you type including task switching keys like ALT+TAB
+      </message>
+      </if>
 
       <!-- Extension/App error messages -->
       <message name="IDS_EXTENSION_CANT_GET_ABSOLUTE_PATH" desc="Warning displayed in pack dialog when the absolute path to the extension directory can not be found.">